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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-02-20 11:54:53 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-02-20 11:54:53 -0800 |
| commit | 4c971aa78314253cce914ed29e3d90df3326d646 (patch) | |
| tree | a9dcf0b1fdc9e1aacff90afb5b3ab79983115dcc /mm/memory.c | |
| parent | 4ba24fef3eb3b142197135223b90ced2f319cd53 (diff) | |
| parent | 290b799c390d77d27effee3ce312203aaa32ee74 (diff) | |
Merge branch 'next' into for-linus
Second round of updates for 3.20.
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/memory.c b/mm/memory.c index c6565f00fb38..2c3536cc6c63 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -235,6 +235,9 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long static void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) { + if (!tlb->end) + return; + tlb_flush(tlb); mmu_notifier_invalidate_range(tlb->mm, tlb->start, tlb->end); #ifdef CONFIG_HAVE_RCU_TABLE_FREE @@ -247,7 +250,7 @@ static void tlb_flush_mmu_free(struct mmu_gather *tlb) { struct mmu_gather_batch *batch; - for (batch = &tlb->local; batch; batch = batch->next) { + for (batch = &tlb->local; batch && batch->nr; batch = batch->next) { free_pages_and_swap_cache(batch->pages, batch->nr); batch->nr = 0; } @@ -256,9 +259,6 @@ static void tlb_flush_mmu_free(struct mmu_gather *tlb) void tlb_flush_mmu(struct mmu_gather *tlb) { - if (!tlb->end) - return; - tlb_flush_mmu_tlbonly(tlb); tlb_flush_mmu_free(tlb); } @@ -2632,7 +2632,7 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma, /* Check if we need to add a guard page to the stack */ if (check_stack_guard_page(vma, address) < 0) - return VM_FAULT_SIGBUS; + return VM_FAULT_SIGSEGV; /* Use the zero-page for reads */ if (!(flags & FAULT_FLAG_WRITE) && !mm_forbids_zeropage(mm)) { |